Johnson & Johnson says its vaccine appears to protect against COVID-19 with just one shot. It’s not as strong as some two-shot rivals, but it’s still potentially helpful for a world in dire need of more doses. (Jan. 29)
Johnson & Johnson says its vaccine appears to protect against COVID-19 with just one shot. It’s not as strong as some two-shot rivals, but it’s still potentially helpful for a world in dire need of more doses. (Jan. 29)